Feature: 1It can do 3 cm Height without being noticed by anyone even when put in shoes. Because it is a transparent insole. 2Soft Silicone Can Be Used Repeatedly Height increase insole is softly protecting heel with 100% silicone material, with high adsorption power, It does not move in shoes, so you can use any shoes such as shoes, athletic shoes, mountaineering shoes 3Relieve Tiredness Premium silicon heel gels grip pads soften impact on your sore foot, feet are comfortable. It has a shock absorption effect and keeps your feet healthy. Great for Running, Walking, Standing All Day Long.It is comfortable even in wearing for a long time in socks. Specifications: 100% brand new and high quality Material: GEL Color: colorless and transparent Increase Height: 1cm,2cm,3cm Size As picture show Package includes: 1 Pair Insole Note 1. Due to light and other reasons, there may be differences in color. 2. Products are manual measurement, there is slightly measuring error. 3. Thank you for your kindly understanding.